League status was achieved in 1907 and in their first season in Division Two, Fulham were serious contenders for a remarkable double, promotion and the Cup. The Cup campaign began with a remarkable 8-3 victory at Southern League Luton, which remains the Club's best away win in the competition.
The Second Round tie at Norwich was switched to the Cottage, and Fulham only narrowly overcame the non-League side from East Anglia, 2-1.
This set up a clash with Manchester City, then challenging for the League Championship.
A draw at wind-swept Hyde Road was followed by a sensational 3-1 win for Fulham in the mid-week replay, which drew a gate of 38,000. An even bigger upset followed in the quarter finals.
League leaders and favourites for the Double, Manchester United, who had the legendary Billy Meredith amongst their star-studded line-up, travelled to SW6. They attracted the first-ever 40,000 crowd to the Cottage and the newspapers claimed that such wild enthusiasm for football had not been seen in London since Spurs won the Cup in 1901.
Fred Harrison scored twice, once either side of a Jimmy Turnbull effort for United, to give Fulham a victory that shocked the football world and sparked celebrations well into the evening.
This was to prove the Second Division club's Cup Final, however, they were overwhelmed at Anfield in the semi final by Newcastle, the team of the Edwardian decade. Their cause was not helped by an injury to goalkeeper Leslie Skene in the first few minutes and they finished on the wrong end of a 0-6 scoreline, which is still the biggest winning margin for a Cup semi final.
In the remaining seven seasons before the Great War, Fulham achieved little in the Cup apart from a run to the last eight in 1911-12. The best of the three home victories that took the Cottagers to the quarter finals was a 3-0 success over First Division Liverpool, a deserved win inspired by left winger Willie Walker.
Although non-League Northampton were swept aside in the next round, First Division West Brom proved too big an obstacle in Round Four, beating Fulham 3-0. In the final pre-war season, Fulham had a taste of what it was like to be the victim of a Cup shock. In a Second Round tie at the Cottage in January 1915, they went down 2-3 to Southampton, the first occasion on which as a League club, they were knocked out not only by a club from a lower division but also by a non-League side.